Split set bolt support is a safe and economical support method. It is a general term for supporting structures with bolts as the main body. It includes anchor rod, bolts, and anchor mesh. The technology is to form holes obliquely in the soil layer, bury the anchor rod and pour cement, rely on the friction between the anchor body and the soil, the gripping force between the tie rod and the anchor body, and the strength of the tie rod to withstand the action of the support. structural loads.

1.     The split set bolt support can be followed until the headway of the tunnel, and the support is very timely, which can avoid the occurrence of empty roof operations.

2.     As long as the split set bolt is pushed into the bolt eye, the generated anchoring force can be achieved, the supporting effect is better, and the maintenance workload caused by the untimely supporting can be reduced.

3.     Compared with the previous similar bolt support process, the pipe seam bolt support has the advantages of simple process, easy operation, and better support quality.

4.     Compared with the pit wood support, the split set bolt support not only actively supports the rock, but also reduces the accident caused by the deformation of the roadway, prolongs the support period, and achieves the purpose of energy saving and consumption reduction. The cost of support has been significantly reduced. In addition, the probability of roadway rock weathering and falling off is greatly reduced, and the maintenance of roadway is less, which is very beneficial to retaining the integrity of the wind roadway on the mining face, and creates better conditions for the construction of the regular face of the mine.

5.     Advantages of split set bolt advance support

It can make the soft coal seam and broken rock layer form an arch beam structure after anchoring, increase the overall strength of the coal seam and the rock layer, make the coal rock mass that is not easy to control into a coal rock mass with a relatively stable time, and create an effective support for the construction. A certain amount of darkness, so that the construction can be carried out safely and smoothly.